Annual report pursuant to Section 13 and 15(d)

Employee Benefit Plans - Status of Stock Options Related to Stock Plans (Details)

v3.20.4
Employee Benefit Plans - Status of Stock Options Related to Stock Plans (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Options Outstanding Beginning Balance 0    
Options Outstanding Forfeited (6,000)    
Options Outstanding Exercisable 2,267,000    
Options Outstanding Ending Balance   0  
Weighted Average Exercise Price Per Share, Beginning Balance $ 0    
Weighted Average Exercise Price Per Share, Forfeited 16.76    
Weighted Average Exercise Price Per Share, Ending Balance $ 16.76 $ 0  
Weighted Average Remaining Contractual Term 9 years 3 months 18 days 0 years  
Aggregate Intrinsic Value, Beginning Balance $ 49,434 $ 0  
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period 2,273,000    
Intrinsic value of stock options exercised $ 0 $ 426 $ 3,564
Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Exercise Price Per Share, Beginning Balance $ 0    
Exercise Price Per Share, Forfeited 16.76    
Exercise Price Per Share, Ending Balance 16.76 $ 0  
Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Exercise Price Per Share, Beginning Balance 0    
Exercise Price Per Share, Forfeited 16.76    
Exercise Price Per Share, Ending Balance $ 16.76 $ 0